IEQ 1 VENTILATION

Credit Interpretation Request

Pro-rata for ventilation rates

Credit Interpretation Request NumberIEQ1-C-OB1-1381

Guidance2016-04-18

Where there is more than one Air Handling Unit in a single plant room that receives outside air, the outside air per Air Handling Unit may be pro-rated. The total outside air supplied to the plant room is to be pro-rated per Air Handling unit based on the total airflow of each Air Handling Unit, and respectively allocated. The following calculation must be used to demonstrate compliance with relevant credit criteria:

In order to demonstrate compliance with the above methodology, the Short Report must show the calculations completed demonstrating compliance with the above methodology and relevant credit criteria. The design must just ensure that fresh air can be evenly distributed between the various AHUs.